Africa : countries of the Nile /
Darley, James M.(James Morrison)cartographer.
Grosvenor, Melville Bell,1901-1982,editor.
Calder, Ritchie,1906-1982,former owner.StEdNL
National Geographic Society.Cartographic Division.
Relief shown by gradient tints and spot heights.
"Atlas plate 56 : October 1963."